onShowFileChooser() from android webview works only once
31,917
Solution 1
firstly, sorry to my english. you should return empty Uri[]{} to file receive
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});
my code can choose take photo or local image:
private static final int REQUEST_GET_THE_THUMBNAIL = 4000;
private static final long ANIMATION_DURATION = 200;
public final static int FILECHOOSER_RESULTCODE = 1;
public final static int FILECHOOSER_RESULTCODE_FOR_ANDROID_5 = 2;
//JS
webView.getSettings().setJavaScriptEnabled(true);
//set ChromeClient
webView.setWebChromeClient(getChromeClient());
//ChromeClinet配置
private WebChromeClient getChromeClient() {
return new WebChromeClient() {
//3.0++
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType) {
openFileChooserImpl(uploadMsg);
}
//3.0--
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
openFileChooserImpl(uploadMsg);
}
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
openFileChooserImpl(uploadMsg);
}
// For Android > 5.0
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> uploadMsg, WebChromeClient.FileChooserParams fileChooserParams) {
openFileChooserImplForAndroid5(uploadMsg);
return true;
}
};
}
private void openFileChooserImpl(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
new AlertDialog.Builder(mActivity)
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (items[which].equals(items[0])) {
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("image/*");
startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);
} else if (items[which].equals(items[1])) {
dispatchTakePictureIntent();
}
dialog.dismiss();
}
})
.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
Log.v(TAG, TAG + " # onCancel");
mUploadMessage = null;
dialog.dismiss();
}})
.show();
}
private void openFileChooserImplForAndroid5(ValueCallback<Uri[]> uploadMsg) {
mUploadMessageForAndroid5 = uploadMsg;
new AlertDialog.Builder(mActivity)
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (items[which].equals(items[0])) {
Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT);
contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE);
contentSelectionIntent.setType("image/*");
Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER);
chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent);
chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser");
startActivityForResult(chooserIntent, FILECHOOSER_RESULTCODE_FOR_ANDROID_5);
} else if (items[which].equals(items[1])) {
dispatchTakePictureIntent();
}
dialog.dismiss();
}
})
.setOnCancelListener(new DialogInterface.OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
Log.v(TAG, TAG + " # onCancel");
//important to return new Uri[]{}, when nothing to do. This can slove input file wrok for once.
//InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});
mUploadMessageForAndroid5 = null;
dialog.dismiss();
}}).show();
}
private void dispatchTakePictureIntent() {
Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
if (takePictureIntent.resolveActivity(mActivity.getPackageManager()) != null) {
// File file = new File(createImageFile());
Uri imageUri = null;
try {
imageUri = Uri.fromFile(createImageFile());
} catch (IOException e) {
e.printStackTrace();
}
//temp sd card file
takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(takePictureIntent, REQUEST_GET_THE_THUMBNAIL);
}
}
private File createImageFile() throws IOException {
// Create an image file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = "JPEG_" + timeStamp + "_";
File storageDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/don_test/");
if (!storageDir.exists()) {
storageDir.mkdirs();
}
File image = File.createTempFile(
imageFileName, /* prefix */
".jpg", /* suffix */
storageDir /* directory */
);
// Save a file: path for use with ACTION_VIEW intents
mCurrentPhotoPath = image.getAbsolutePath();
return image;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
Log.v(TAG, TAG + " # onActivityResult # requestCode=" + requestCode + " # resultCode=" + resultCode);
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage)
return;
Uri result = intent == null || resultCode != Activity.RESULT_OK ? null : intent.getData();
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
} else if (requestCode == FILECHOOSER_RESULTCODE_FOR_ANDROID_5) {
if (null == mUploadMessageForAndroid5)
return;
Uri result;
if (intent == null || resultCode != Activity.RESULT_OK) {
result = null;
} else {
result = intent.getData();
}
if (result != null) {
Log.v(TAG, TAG + " # result.getPath()=" + result.getPath());
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{result});
} else {
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{});
}
mUploadMessageForAndroid5 = null;
} else if (requestCode == REQUEST_GET_THE_THUMBNAIL) {
if (resultCode == Activity.RESULT_OK) {
File file = new File(mCurrentPhotoPath);
Uri localUri = Uri.fromFile(file);
Intent localIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, localUri);
mActivity.sendBroadcast(localIntent);
Uri result = Uri.fromFile(file);
mUploadMessageForAndroid5.onReceiveValue(new Uri[]{result});
mUploadMessageForAndroid5 = null;
} else {
File file = new File(mCurrentPhotoPath);
Log.v(TAG, TAG + " # file=" + file.exists());
if (file.exists()) {
file.delete();
}
}
}
}
Solution 2
Faced similar problem i was returning boolean value in method onShowFileChooser, issue was fixed when i called super class method
@Override
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, FileChooserParams fileChooserParams) {
//Logic to implement
return super.onShowFileChooser(webView, filePathCallback, fileChooserParams);
}
Solution 3
In the onShowFileChooser() method you should return true, only if you are using the filePathCallback, which is the best way:
private ValueCallback<Uri[]> filePathCallback;
@Override
public boolean onShowFileChooser(
WebView webView, ValueCallback<Uri[]> filePathCallback,
WebChromeClient.FileChooserParams fileChooserParams) {
// do whatever you need to do, to show a file chooser/camera intent
this.filePathCallback = filePathCallback;
return true;
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
// Check for your correct requestCode from your intent here
if (resultCode == RESULT_CANCELED) {
// this is important, call the callback with null parameter
this.filePathCallback.onReceiveValue(null);
} else if (resultCode == RESULT_OK) {
// extract the uri(s) you need here
this.filePathCallback.onReceiveValue(new Uri[]{result});
}
}
Solution 4
I had the similar issue that onShowFileChooser only works once. After few hours of trail and error and then I figured out using a simple experiment:
Not invoking
ValueCallbackwill resultonShowFileChooseronly works once. Below code only works once...override fun onShowFileChooser( view: WebView?, filePath: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams? ): Boolean { Log.i("blah", "<== onShowFileChooser ==>") // filePath?.onReceiveValue(null) return true }Properly invoking
ValueCallbackwill makeonShowFileChooserwork every time:override fun onShowFileChooser( view: WebView?, filePath: ValueCallback<Array<Uri>>?, fileChooserParams: FileChooserParams? ): Boolean { Log.i("blah", "<== onShowFileChooser ==>") filePath?.onReceiveValue(null) return true }
so I just check all branches and make sure all properly invoking ValueCallback then the webview works as expected.
Solution 5
Just set a null value:
if (resultCode == Activity.RESULT_OK) {
handleImageRequest(data)
} else {
mValueCallbackArray?.onReceiveValue(null)
mValueCallbackArray = null
}
Author by
Sangeetha Pinto
Updated on March 15, 2021Comments
-
Sangeetha Pinto about 3 years
I need to pick images from the device and upload it to the server. For the first time, when I pick the images, onShowFileChooser() gets called and everything works. But, when I try to click upload again, onShowFileChooser() never gets called. But it's working for non-lollypop devices. openFileChoser() gets called, whenever I click upload. Is there anything that I'm missing. Here is my code :
//Needed for file upload feature vWebView.setWebChromeClient(new WebChromeClient() { // file upload callback (Android 2.2 (API level 8) -- Android 2.3 (API level 10)) (hidden method) public void openFileChooser(ValueCallback<Uri> filePathCallback) { showAttachmentDialog(filePathCallback); } // file upload callback (Android 3.0 (API level 11) -- Android 4.0 (API level 15)) (hidden method) public void openFileChooser(ValueCallback filePathCallback, String acceptType) { showAttachmentDialog(filePathCallback); } // file upload callback (Android 4.1 (API level 16) -- Android 4.3 (API level 18)) (hidden method) public void openFileChooser(ValueCallback<Uri> filePathCallback, String acceptType, String capture) { showAttachmentDialog(filePathCallback); } // file upload callback (Android 5.0 (API level 21) -- current) (public method) // for Lollipop, all in one @Override public boolean onShowFileChooser( WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) { // Double check that we don't have any existing callbacks if (mFilePathCallbackArray != null) { mFilePathCallbackArray.onReceiveValue(null); } mFilePathCallbackArray = filePathCallback; // Set up the take picture intent if (mTypeCap == IMAGE) { Intent takePictureIntent = pictureIntentSetup(); return showChooserDialog(takePictureIntent); } //set up video capture intent else { Intent takeVideoIntent = videoIntentSetUp(); return showChooserDialog(takeVideoIntent); } } }); //For lollypop private Intent pictureIntentSetup() { Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) { // create the file where the photo should go File photoFile = null; try { photoFile = createImageFile(); takePictureIntent.putExtra("PhotoPath", mCameraPhotoPath); } catch (IOException ex) { // Error occurred while creating the File Log.e("Failed", "Unable to create Image File", ex); } // continue only if the file was successfully created if (photoFile != null) { mCameraPhotoPath = "file:" + photoFile.getAbsolutePath(); takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(photoFile)); } else { takePictureIntent = null; } } return takePictureIntent; } //For lollypop private Intent videoIntentSetUp() { Intent takeVideoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE); if (takeVideoIntent.resolveActivity(getActivity().getPackageManager()) != null) { // create the file where the video should go File videoFile = null; try { videoFile = createVideoFile(); takeVideoIntent.putExtra("PhotoPath", mCameraPhotoPath); } catch (IOException ex) { // Error occurred while creating the File Log.e("Failed", "Unable to create Video File", ex); } // continue only if the file was successfully created if (videoFile != null) { mCameraPhotoPath = "file:" + videoFile.getAbsolutePath(); takeVideoIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(videoFile)); } else { takeVideoIntent = null; } } return takeVideoIntent; } //For lollypop private boolean showChooserDialog(Intent intent) { Intent contentSelectionIntent = new Intent(Intent.ACTION_GET_CONTENT); contentSelectionIntent.addCategory(Intent.CATEGORY_OPENABLE); if (mTypeCap.equalsIgnoreCase(IMAGE)) contentSelectionIntent.setType(IMAGE); else contentSelectionIntent.setType(VIDEO); Intent[] intentArray; if (intent != null) { intentArray = new Intent[]{intent}; } else { intentArray = new Intent[0]; } Intent chooserIntent = new Intent(Intent.ACTION_CHOOSER); chooserIntent.putExtra(Intent.EXTRA_INTENT, contentSelectionIntent); if (mTypeCap.equalsIgnoreCase(IMAGE)) chooserIntent.putExtra(Intent.EXTRA_TITLE, "Image Chooser"); else chooserIntent.putExtra(Intent.EXTRA_TITLE, "Video Chooser"); chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray); getActivity().startActivityForResult(chooserIntent, FILE_CHOOSER_RESULT_CODE); return true; }OnActivityResult of the activity:
@Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); //File upload related if (requestCode == NewsDetailFragment.FILE_CHOOSER_RESULT_CODE && (resultCode == RESULT_OK || resultCode == RESULT_CANCELED)) { Fragment fragment = getSupportFragmentManager() .findFragmentById(R.id.container); if (fragment != null && fragment instanceof DetailFragment) { Fragment currentFragment = ((DetailFragment) fragment).getCurrentFragment(); if (currentFragment instanceof WebDetailFragment) currentFragment.onActivityResult(requestCode, resultCode, data); } } } }onActivityResult of fragment:
@Override public void onActivityResult(int requestCode, int resultCode, Intent intentData) { super.onActivityResult(requestCode, resultCode, intentData); // code for all versions except of Lollipop if (!Utility.isLollypopAndAbove()) { Uri result = null; // check that the response is a good one if (resultCode == Activity.RESULT_OK) { if (requestCode == FILE_CHOOSER_RESULT_CODE) { if (null == this.mFilePathCallback) { return; } if (null == mFilePathCallback) return; if (intentData == null) { // if there is not data, then we may have taken a photo if (mCameraPhotoPath != null) { result = Uri.parse(mCameraPhotoPath); } } else { String dataString = intentData.getDataString(); if (dataString != null) { result = Uri.parse(dataString); } } // Uri result = intentData == null || resultCode != Activity.RESULT_OK ? null // : intentData.getData(); } // for Lollipop only } mFilePathCallback.onReceiveValue(result); mFilePathCallback = null; } else { Uri[] results = null; // check that the response is a good one if(resultCode==Activity.RESULT_OK) { if (requestCode == FILE_CHOOSER_RESULT_CODE) { if (null == mFilePathCallbackArray) { return; } if (intentData == null) { // if there is not data, then we may have taken a photo if (mCameraPhotoPath != null) { results = new Uri[]{Uri.parse(mCameraPhotoPath)}; } } else { String dataString = intentData.getDataString(); if (dataString != null) { results = new Uri[]{Uri.parse(dataString)}; } } } } mFilePathCallbackArray.onReceiveValue(results); mFilePathCallbackArray = null; return; } }